We report Monte Carlo simulations for the T = 0 phase diagram of a mesoscopic metallic junction. We present some evidence of a T = 0 phase transition induced by the dissipation strength a. In the strong-coupling region the predictions of the spin-wave theory turn out to be correct and the algebraic decay of correlations implies quasi-long-range order, corresponding to the absence of a Coulomb-blockade voltage threshold. The critical junction resistance is estimated to be R(t) almost-equal-to 0.6 k-OMEGA.
Phase transition in small metallic junctions with quasiparticle dissipation
FALCI, Giuseppe;
1991-01-01
Abstract
We report Monte Carlo simulations for the T = 0 phase diagram of a mesoscopic metallic junction. We present some evidence of a T = 0 phase transition induced by the dissipation strength a. In the strong-coupling region the predictions of the spin-wave theory turn out to be correct and the algebraic decay of correlations implies quasi-long-range order, corresponding to the absence of a Coulomb-blockade voltage threshold. The critical junction resistance is estimated to be R(t) almost-equal-to 0.6 k-OMEGA.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
